755091121 has 2 divisors, whose sum is σ = 755091122. Its totient is φ = 755091120.

The previous prime is 755091119. The next prime is 755091131. The reversal of 755091121 is 121190557.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 621804096 + 133287025 = 24936^2 + 11545^2 .

It is an emirp because it is prime and its reverse (121190557) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 755091121 - 2¹ = 755091119 is a prime.

Together with 755091119, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (755091131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 377545560 + 377545561.

It is an arithmetic number, because the mean of its divisors is an integer number (377545561).

Almost surely, 2^755091121 is an apocalyptic number.

It is an amenable number.

755091121 is a deficient number, since it is larger than the sum of its proper divisors (1).

755091121 is an equidigital number, since it uses as much as digits as its factorization.

755091121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3150, while the sum is 31.

The square root of 755091121 is about 27478.9213944070. The cubic root of 755091121 is about 910.6114800961.

The spelling of 755091121 in words is "seven hundred fifty-five million, ninety-one thousand, one hundred twenty-one".